There's coordination and then there's coordination.

Frontline absolutely does - and should - reward being cohesive and coordinating as a team. Generally whoever does the best at that wins. But there's a level of coordination you can reasonably expect people who were randomly assigned together to pull off, and occasionally you see the type of coordination that's clearly implausible without having a prearranged group setting it up in advance and communicating through methods outside the game. The matches where one team repeatedly rips through crowds using a precisely timed sequence of actions executed by an extremely specific combination of jobs. The matches where two teams sit around at the third team's camp to farm battle high for the first half of the match.

I'm sure that this level of play is fun and rewarding to pull off, and I'd even argue that there should be a place for people to do this. The problem is with the range of players involved in a match like that. Having a premade, ultra-coordinated team go up against a bunch of people who are just running their roulettes produces results that are so lopsided that it leaves a bad taste in people's mouths.

I'm not sure what the solution is for this. The best idea I've thought of would be to split out the queue like they do with CC, where the "normal" queue can't be joined by premade parties and there's a separate "teams" queue that can be. I know there are pros and cons to that - the regular FL queue would likely take longer to fill and it might be hard to find enough people for the teams mode.